Home / 66,319.99-91,507.40-39,457.25

Finding the Fourth Proportional to 66,319.99, 91,507.40 and 39,457.25

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Solution

The fourth proportional to 66,319.99, 91,507.40 and 39,457.25 is: 54,442.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,319.99 : 91,507.40 = 39,457.25 : x
  2. Step 2: Convert to fraction form
    66,319.99/91,507.40 = 39,457.25/x
  3. Step 3: Cross multiply
    66,319.99x = 91,507.40 × 39,457.25
  4. Step 4: Simplify right side
    66,319.99x = 3,610,630,358.65
  5. Step 5: Solve for x
    x = 3,610,630,358.65/66,319.99
  6. Step 6: Final answer
    x = 54,442.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.